Final answer:
The given statement is True, DNA is indeed transferred through a pilus during bacterial conjugation. The process involves an F pilus, which facilitates the transfer of plasmids loaded with genetic content between prokaryotic cells.
Step-by-step explanation:
True, DNA is transferred through a pilus during the process known as bacterial conjugation. In this process, a specific type of pilus known as the F pilus or sex pilus plays a crucial role. The F pilus, which is encoded by the F plasmid (fertility factor) in bacteria like E. coli, is used to bring two bacterial cells into close enough proximity to transfer genetic material, usually in the form of a plasmid.
- The donor cell, which contains the F plasmid and is capable of forming an F pilus, attaches this pilus to a recipient cell.
- The pilus contracts, bringing the two cells together.
- The membranes merge and the content loaded DNA, in the form of a plasmid, moves from the donor cell into the recipient cell.
This method of DNA transfer greatly contributes to genetic diversity in prokaryotic organisms and is a mechanism of horizontal gene transfer.